Rotary motor.



A. B. CHAPMAN & P. A. SHOEMAKER. Q

ROTARY MOTOR.

APPLICATION FILED APR. 17.1908.

92?,639 Q Patented July 13, 1909.

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}Zwewima A. B. CHAPMAN & F. A. SHOEMAKER.

ROTARY MOTOR.

APPLICATION FILED APR.17.1908. v 927,68. Patented July 13,1909.

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ALBERT B. CHAPMAN, OF SILVER CREEK, AND FRANK A. SIIOEMAKER, OF BUFFALO,

NEW YORK; SAID SHOEMAKER ASSIGNOR TO SAID CHAPMAN.

ROTARY MOTOR.

Specification of Letters Patent.

Patented July 13, 1909.

T 0 all whom it may concern:

Be it known that we, ALBERT B. CHAPMAN and FRANK A. SHOEMAKER, citizensof the United States, and residents of Silver Creek, in the county ofChautauqua and State of New York, and of Buffalo, in the county of Erieand State of New York, respectively, have invented certain new anduseful Improvements in Rotary liiotors, of which the following is aspecification.

This invention relates to rotary motors and more particularly to thattype of rotary motors known as a turbine. Its primary object is theproduction of a motor of such type, in which buckets or impact-elementsare removably attached to the body-portion of a turbine-wheel so thatone size of buckets or impact-elements may be employed in motors ofdifferent sizes, but since motors of this type are used for all kinds ofwork and are built in small sizes as well as very large sizes, we findthat, for best results, the buckets or impact elements used in thesmallest size of motors should be used only in engines up to a certainsize or horse power, and that, as the motor increases in size orhorsepower, the buckets should be enlarged; each size of buckets orimpact-elements being employed in motors of different sizes orhorse-power between certain limits. In this manner, four sizes ofbuckets or impact-elements would serve admirably for all sizes of motorscapable of use for all ordinary purposes.

Another object of our invention is the production of a simple andefficient motor, in which few parts are used in addition to the bucketsor impact-elements and in which the latter are rigidly held to the bodyof the turbine-wheel by a single element.

Another object of our invention is the provision of a plurality ofchambers having each a turbine-wheel and means of exhaust, the means ofexhaust of the first or primary chamber serving as the inlet for themotive I ccivmg chamber A. Part A has an overfluid of the second chamberif only two chambers are employed, and if more than two chambers areemployed, each succeeding chamber is in communication with the preceding chamber through the medium of the exhaust of said precedingchamber, the mo tive-fluid exhausted from each chamber, ex cept thelast, is directed against the turbinewheel of the succeeding chamber orchambers, as the case may be.

A further object of our invention is to onlarge the successive chambersand their contained turbine-wheels and to so construct the walls of thechambers that each chamber ex tends partly into its succeeding chamber,if there be such.

Still further objects of our invention are, to so arrange theturbine-wheels with relation to the preceding chambers, if there besuch, that the buckets or impact-elemcnts of each wheel surround theperipheral wall of the chamber directly preceding; to provide theprimary chamber with an annular steamchest so that the motivc-fluidentering said chest may issue therefrom at di'il'crent points and bedirected simultaneously and constantly against different buckets of theturbine-wheel in said ohainber; and to otherwise improve on engines ofthis type as and in the manner to be described hereinafter.

Ffith these objects in view, the invention consists in the construction,arrangement, and combination of parts to be hereinafter descrilied andparticularly pointed out in the appended claims.

In the drawings,Figure 1 is a front elevation of my improved motor orengine. Fig. 2 is a vertical section, taken on line 2-2, Fig. 1. Fig. 3is an enlarged sectional view taken through a portion of line 2-2,Fig. 1. Fig. l: is a section taken on line 4-4, Fig. 3. Fig. 5 is atransverse section taken on line 5-5, Fig. 2. Fig. (3 is a sectionsimilar to Fig. 2, showing our invention in modilied form.

Referring now to the drawings in detail, like letters of reference referto like parts in the several iigures.

The reference letter A designates the cylindrical casing which may hesupported in any practicable manner, but is herein shown as havingsupporting legs a. In the eml -odiment of our invention shown in Figs. 1to 5, the casing is shown as comprising two parts A A bolted together toform a piston rehanging flange (1 which forms the peripheral wall of thecasing and near the lTOttOlll of the casing it is provided with anexhaust-opcning a. Part A is cored out to provide a steam chest B intowhich an inlet-opening I) is tapped to receive a feedpipe for themotivefluid. Said steam-chest has an annular extension B which extendsinto the chamber A and has its outer peripheral wall 0 provided withopenings, preferably at regular intervals, into which fluid-nozzles Care secured in any approved manner; said nozzles being arrangedtangentially around said peripheral wall.

A motor shaft D is journaled axially in the ends or heads of the casing,and part A which serves as one of said heads is removable to permitaccess to the parts within the casing. Said shaft is stepped to providetwo shoulders d, d the portion between said shoulders receives theturbine-wheel E which bears against the shoulder d and it is threaded toreceive a securing-nut F whereby said wheel is held in position.Shoulder (Z abuts against the inner face of one of the heads of thecasing and prevents endwise movement of the shaft in one direction whilea spacingelement or washer G interposed between the other head of thecasing and the turbinewheel, serves to prevent endwise movement of theshaft in the opposite direction.

The turbine-wheel comprises the body portion H which is herein shown inthe form of a disk, but any other form may be given the same if desired.Its peripheral edge is screw-threaded to receive an annulus I which isof suflicient width to overhang the disk and surround the annularextension B of the steam chest and its inner periphery is tapered fromits screw threaded portion to its free edge, for a purpose to appearpresently.

Bucket-units or impact-elements J are arranged in a circular serieswithin the annulus. Each bucket or impact-element comprises abody-portion whose outer surface j is curved and inclined from its inneredge to its outer edge to correspond with the taper of the annulus and ascoop-like portion 9' projecting inward from said body-portion. The endedges of the body-portions of said buckets are cast or machined inradial lines and are placed edge to edge around the inner surface ofsaid annulus. The annular space between the annular extension B of thesteam-chest and the annulus is of sufficient size to provide thenecessary clearance for the buckets in their movement over thefluidnozzle, which latter are so disposed that the motive-fluid (whichmay be water, steam, gas, vapor, air, or any other propelling fluid) isdirected against the impact-elements to compel rotation of theturbine-wheel.

In order to secure the buckets or impactelements in position, they areinserted in the annulus in circular series from the wide end and forcedtoward the narrow end; the annulus is then threaded onto thebody-portion of the turbine-wheel, and by means of suit able machineryor tools securely fastened. This causes the inner edges of the bucketsto be forced against said body-portion of the Wheel and simultaneouslydrawn together; thereby assuring a secure wedging of the buckets intoposition.

In the construction shown in Fig. 6, we

have shown .a compound motor or engine, in which K designates theprimary chamber, and K K the secondary chambers. Although we have showntwo secondary cham bers, one or more than two may be employed, ifdesired. The construction of the casing of the primary chamber and itscontained turbine-wheel is similar to corresponding parts in the motorshown in Figs. 1 to 5, except that the peripheral wall has an outstanding flange L forming part of the inclosure for the adjoiningsecondary chamber, and the same reference letters designating thevarious parts shown in said figures, also apply to the parts of thecasing and wheel of the primary chamber. In Fig. 6, the successivechambers are made successively large and the casing of the primarychamber extends partly into the second chamber, while the casing of thelatter extends partly into the third chamber, each casing forming partof the inclosure on the next succeeding chamber. The casing of thesecond chamber is bolted to the outstanding flange L of the primarychamber and it is itself provided with an outstanding flange M to whichthe casing of the third chamber is secured. This arrangement may beextended to provide any number of additional chambers.

The peripheral wall of the casing of the primary chamber hasfluid-nozzles N through which the motive-fluid is exhausted and thesenozzles direct the motive-fluid against the impact elements of aturbine-wheel O in the second chamber. The peripheral wall of the casingof said second chamber has fluid-nozzles P through which themotive-fluid is ex hausted from said second chamber and directed againstthe impact-elements of a turbine wheel R in the third or last chamber,which latter has a final exhaust S. The turbine-wheels O and R may besimilar to that in the primary chamber and the three wheels are securedto a shaft T.

Having thus described our invention, what we claim is,

1. A turbine-wheel comprising a bodyportion provided on its peripherywith screwthreads, a flange threaded onto said body and over-hangingthereon, and a series of impact-elements held in position by saidflange.

2. A turbine-wheel comprising a bodyportion provided on its peripherywith screwthreads, and a flange threaded onto said screw-threadedperiphery and carrying impact-elements.

3. A turbine-wheel comprising a bodyportion provided on its peripherywith screwthreads, an annulus threaded onto said,

screw-threaded periphery and overhanging one side of said body-portion,and bucketunits held to the inner periphery of the overhanging portionof said annulus.

4. A turbine-wheel comprising a bodyportion, an over-hanging annulusthreaded onto said body-portion and having its inner peripheral surfacetapered, and impact-elements arranged in circular series and drawntogether by said annulus.

5. A turbine-Wheel comprising a bodyportion, an over-hanging annulussecured to said body-portion and having its inner peripheral surfacetapered, and bucket-units arranged in circular series against thetapered surface of said annulus and drawn against the body-portion bysaid annulus.

6. A turbine-wheel comprising a body portion, an overhanging annulusadjustable on said body-portion and having its inner surface tapered,and impact-elements in cireular series drawn together and against saidbody-portion by said adjustable annulus.

7. A turbine-wheel comprising a bodyportion, an overhanging annulus heldon said body-portion and having its inner surface tapered, andbucket-units held in position against the inner tapered surface of saidannulus, each bucket-unit having its outer surface curved and tapered toconform to or approximately conform to the tapered surface of saidannulus.

8. A turbine-wheel comprising a bodyportion, a removable annulus and acircular series of impact-elements held wholly within said annulus.

9. A turbine-wheel comprising a bodyportion, an annulus removable onsaid body portion and extending therefrom to overhang one side, and aseries of impact-elements held against the inner peripheral surface ofsaid annulus.

10. A turbine-wheel comprising a bodyportion, an overhanging annulusremovably held to said body-portion, and impact-elements in circularseries rigidly held by said annulus and surrounded thereby.

In testimony whereof, we have alIiXed our signatures in the presence oftwo subscribing witnesses.

ALBERT B. CHAPMAN. FRANK A. S1:[( )EMAKEl-t. W'itnesses for Chapman:

MARGARET S. HUNT, I'lA'lTIE I. SHATTUOK. Witnesses for Shoemaker:

or B. MAoDowELL, FRANK KLEmsnMnrr.

